Improvement in feed-water heaters



B. EYNON.

FEED-WATER HEATER.

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y the heater.

PATENT FFIGE.

BENJAMIN EYNON, OF PITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN FEED-WATER HEATERS.

Specification forming part of Letters Patent No. 1 89,206, dated April3, 1877; application filed July 1, 1876.

To all whom it may concern Be it known that l, BENJAMIN EYNON, ofPittsburg, in the county of Allegheny and State of Pennsylvania, haveinvented a new and Improved Feed-Water Heater, of which the following isa specification:

In the accompanying drawing, Figure 1 represents a vertical centralsection of my improved feed-water heater,'taken on line 0 c, Fig. 2; andFig. 2, a top view of thcsaine, with top plate taken off to showinterior construction.

Similar letters of reference indicate corresponding parts.

My invention has reference to an improved feed-water heater, of simpleand effective construction, that is worked by exhaust steam, supplyingpure water to the boiler.

The invention consists of a heater with interior dome, supported at theupper part of The central top part of the dome is made dishing, toexpose the water in a thin sheet to the action of the exhaust steam,that is thrown on the lower part of the dome, passing up in oppositedirection to thewater, and escaping at the top. The water is drawn offfrom the center of the heater by the pump feed-pipe.

In the drawing, A represents a heater of cylindrical shape, with curvedtop and bot tom parts-the top part to facilitate the escape of theexhaust steam, the bottom part to insure the settling" of the sedimentsnear the center, where they may be readily blown oft by means of ablow-off cock and pipe at the lowermost point of the same.

The exhaust steam from the engine enters through a pipe, B, at the sideof the heater, which pipe is bent upward at the center of the heater,and terminates at a suitable distance below an interior dome, O, that issupported on side lugs a of the heater, and formed with dependingcylindrical wall, which forms an annular channel between heater anddome.

The exhaust-steam is first thrown against the under side of the dome,then passed downward along the sides of the same, and, finally, upwardin the space formed between heater and dome to the exit-pipe B at thetop of the heater. The water enters the heater at the top through apipe, D, and is discharged near the bottom of a central dishing orrecess, b, of the dome, which dishing serves to distribute the waterequally over the surface of the dome, exposing it in a thin sheet to theaction of the exhaust steam that passes up in opposite direction to thewater. The exhaust steam enters at a point above the waste-water pipe,and prevents thereby the entering of water into the exhaust-pipe whenthe engine is at rest, which forms an annoying feature of many heaters.

The feed-pipe D, with a suitable strainerhead, is arranged at the centerof the heater near the water-line, for the purpose of receiving thepure, and also the condensed, water from the center of heater at alltimes.

A great portion of the exhauststeam'is condensed by contact with theunder side of dome,,that is kept cool by the cold water dischargedthereon. This condensed water furnishes pure water near the center ofheater, and produces a considerable decrease in the quantity offeed-water required.

The sediments are collected at the sides and bottom of the heater, andmay be cleaned out by a man-hole at the side, and by the blow-off cockat the bottom.

As the exhaust steam is mostly condensed and fed to the boiler with thefeed-water, less fuel is required in the use of the boiler, on accountof the purity of the water and abseuce of scale, while the heater, beingconstructed entirely of cast-iron, without complicated parts, may bemanufactured at about half the cost of most other heaters in use.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a feed-water heater, the combination of the casing A, the dome 0,having depending cylindrical wall, separated by an annular space fromthe casing, and the steam-induction pipe B, entering said dome andterminating near the top, whereby the admitted steam is brought incontact with the interior of the dome, the surface of the heatedfeed-water and the water falling between the dome wall and easing,substantially as described and shown.

BENJAMIN EYNON.

i Witnesses:

JOHN DAVIES, JAMES J ONES.

